KW Clubsport 3-Way Install: 2020-2023 718 Cayman GT4

Installing KW Clubsport 3-Way coilovers on a 2020-2023 Porsche 718 Cayman GT4 is the single biggest handling upgrade you can make to an already brilliant chassis. The GT4's 4.0-liter flat-six spins to 8,000 rpm and makes 414 horsepower, but its factory PASM adaptive dampers are tuned for a broad audience. Swapping to a motorsport-grade 3-way coilover unlocks independent damping control, a TUV-tested ride-height range, and the corner-balance flexibility a track car demands. This step-by-step guide from our Tampa, FL shop covers the tools, the torque, the ESC module you cannot skip, ride height, corner balancing, damper tuning, and a track alignment that actually works.

Why the 718 Cayman GT4 Is the Perfect Coilover Candidate

The Porsche 718 Cayman GT4 (982) is a mid-engine, track-focused sports car that responds to suspension tuning better than almost anything at its price. From the factory it runs a 4.0-liter naturally aspirated flat-six producing 414 hp (420 PS) at 7,600 rpm and 310 lb-ft of torque from 5,000-6,800 rpm, a curb weight of roughly 3,131 lbs, and a 0-60 mph time of 4.3 seconds with the six-speed manual (3.7 seconds with the optional 7-speed PDK added for 2021). Its ABS and stability programming were lifted from the 911 GT3 RS, and it rides on PASM adaptive dampers set about 30 mm lower than a base Cayman.

That factory PASM system is the catch. It is a comfortable, capable street damper, but it is not track-adjustable in the way a serious driver wants. You cannot independently tune low-speed body control against high-speed impact compliance, and you cannot corner-balance the car around the driver's weight. A KW Clubsport 3-Way coilover system replaces all four PASM units with rebuildable, spherical-mounted, triple-adjustable dampers — the same architecture KW runs in customer motorsport.

What You Need Before You Start

You need three things to install KW Clubsport 3-Way coilovers on a GT4 correctly: the coilover kit itself, the KW ESC module to silence the PASM warning, and a plan for alignment. Because the GT4 uses electronically controlled adaptive dampers, unplugging them without an ESC (Electronic Suspension Cancellation) module leaves a permanent chassis fault and a dash warning light. The KW ESC module emulates the OEM damper signal so the car's control unit stays happy after the passive coilovers go in.

Tools and shop equipment

At minimum you want a two-post or four-post lift (a floor jack and stands will work but slow you down), metric sockets and hex/Torx bits, a torque wrench that covers Porsche factory values, the spring-perch adjustment wrench supplied with the kit, a tape measure or ride-height gauge, and ideally corner-weight scales. Torque every suspension fastener — strut-to-upright bolts, top-mount nuts, sway-bar end links — to Porsche factory specification. Never freehand it on a GT4.

The companion parts that make the build worth it

A 3-way coilover changes your ride height and roll stiffness, which means your factory sway-bar end links and rear toe are no longer optimal. Adjustable SPL front sway-bar end links let you re-level the bar after lowering, and the SPC adjustable trailing links add the rear toe and camber range you need for a real track alignment. Here is how the four pieces of the build compare.

How to Install KW Clubsport 3-Way Coilovers Step by Step

Installing the KW Clubsport 3-Way on a 718 Cayman GT4 is a bolt-in job that takes a professional shop roughly 4-6 hours and a careful first-time DIYer 6-10 hours, plus alignment. Work one axle at a time, keep the car supported on the lift, and follow the sequence below.

Step 1: Prep, safety, and pre-measurement

Record the factory ride height at all four corners before you touch anything — measure from the ground to the center of each fender arch. Put the car on the lift, let the suspension hang, and remove the wheels. Pre-assemble the front strut top mounts on the bench per KW's instructions so you are not fighting spherical bearings in the wheel well.

Step 2: Remove the OEM PASM struts and dampers

Disconnect the PASM damper connectors, sway-bar end links, and any brake-line or ABS-sensor brackets attached to the strut. Support the lower control arm, remove the strut-to-upright bolts and the top-mount nuts, and lower the factory unit out. Repeat at the rear, where the GT4 uses a separate coil spring and damper.

Step 3: Install the front coilovers

Set each front coilover to your target ride height on the bench first (see the next section), then install the assembly into the strut tower. Torque the top-mount nuts and strut-to-upright bolts to Porsche factory spec, reconnect the brake line and ABS bracket, and route the external reservoir where it is protected from heat and impact but still reachable for adjustment.

Step 4: Install the rear coilovers

Fit the rear KW dampers and adjustable spring perches, then reinstall the lower mounting bolts finger-tight. Do not final-torque the rear (or front) suspension arm bolts until the car is back at ride height on its wheels — torquing bushings at full droop pre-loads them and hurts ride quality and bushing life.

Step 5: Wire in the KW ESC module

Plug the KW ESC module into the factory PASM damper harness at each corner following the supplied diagram. The module presents the correct signal to the GT4's suspension control unit, so the PASM warning never illuminates. Tuck and secure the modules, reinstall the wheels, and lower the car to settle the suspension.

Setting Ride Height and Corner Balancing

On the GT4, aim for a mild drop of roughly 5-20 mm below stock and set ride height with the KW lower spring perch so you never sacrifice spring preload or shock travel. KW's Clubsport uses a separate height-adjustment collar independent of the spring perch, which means you can lower the car without reducing usable damper stroke — critical on a car that sees curbs and kerbing.

After setting height, roll the car, bounce each corner to settle it, and re-measure. Then corner-balance it on scales with a half tank of fuel and driver weight (or ballast) in the seat. Target cross weights as close to 50% as the platform allows — on a mid-engine GT4, a good corner balance is worth more lap time than any single click of damping. Set height, corner-balance, then re-check both, because adjusting one corner moves the others.

Dialing In the Dampers: Low-Speed, High-Speed and Rebound

The KW Clubsport 3-Way gives you three independent adjustments: rebound (16 clicks), low-speed compression (6 clicks on the purple dial), and high-speed compression (14 clicks on the gold dial), all set on the external expansion tank. Rebound controls how quickly the car settles after a bump or weight transfer; low-speed compression controls body roll, dive, and squat; high-speed compression controls how the car absorbs sharp impacts like curbs and expansion joints.

Start from KW's tested baseline and make one change at a time. A sensible street starting point is roughly mid-range on each adjuster — about 8-10 clicks of rebound, 3 clicks of low-speed compression, and 6-8 clicks of high-speed compression — then soften high-speed compression if the car skips over bumps, or stiffen low-speed compression if it wallows in transitions. Change one adjuster, drive or lap, and log the result before touching the next.

Track Alignment Specs for the GT4

After the coilovers are set and corner-balanced, a track alignment is mandatory — lowering the GT4 changes camber and toe. A popular street and track starting point is roughly -3.0 to -3.5 degrees of front camber, -2.3 to -2.8 degrees of rear camber, zero to a hair of front toe-out, and a small amount of rear toe-in for stability. This is exactly where the SPC adjustable trailing links earn their keep, because the GT4's factory rear toe range is too narrow for aggressive track settings.

Dial front camber at the strut top mounts and lower eccentric where available, set rear camber and toe with the adjustable links, and re-check thrust angle. Then repeat your ride-height and corner-balance measurements one final time, since alignment changes can nudge them. Our Tampa shop always aligns on scales at target ride height, not on a shop floor at a random height.